On Fri, 08 Jul 2016, Chen-Yu Tsai wrote:
> The AC100 is a multifunction device with an audio codec subsystem and
> an RTC subsystem. These two subsystems share a common register space
> and host interface.
>
> Signed-off-by: Chen-Yu Tsai <w...@csie.org>
> Acked-by: Lee Jones <lee.jo...@linaro.org>
> ---
> Changes since v4:
>
> - None.
>
> Changes since v3:
>
> - Changed register name prefix to CLKOUT_ for clock output controls
>
> Changes since v2:
>
> - Dropped file name
> - Added copyright line.
> - Changed MODULE_LICENSE to GPL v2, matching the header
> - Added Lee's ack
>
> ---
> drivers/mfd/Kconfig | 10 +++
> drivers/mfd/Makefile | 2 +
> drivers/mfd/ac100.c | 137 +++++++++++++++++++++++++++++++++++
> include/linux/mfd/ac100.h | 178
> ++++++++++++++++++++++++++++++++++++++++++++++
> 4 files changed, 327 insertions(+)
> create mode 100644 drivers/mfd/ac100.c
> create mode 100644 include/linux/mfd/ac100.h
Applied, thanks.
> diff --git a/drivers/mfd/Kconfig b/drivers/mfd/Kconfig
> index 00ec1290b639..c2ceb303c856 100644
> --- a/drivers/mfd/Kconfig
> +++ b/drivers/mfd/Kconfig
> @@ -112,6 +112,16 @@ config MFD_BCM590XX
> help
> Support for the BCM590xx PMUs from Broadcom
>
> +config MFD_AC100
> + tristate "X-Powers AC100"
> + select MFD_CORE
> + depends on SUNXI_RSB
> + help
> + If you say Y here you get support for the X-Powers AC100 audio codec
> + IC.
> + This driver include only the core APIs. You have to select individual
> + components like codecs or RTC under the corresponding menus.
> +
> config MFD_AXP20X
> tristate
> select MFD_CORE
> diff --git a/drivers/mfd/Makefile b/drivers/mfd/Makefile
> index 2ba3ba35f745..bca83dbb5ed8 100644
> --- a/drivers/mfd/Makefile
> +++ b/drivers/mfd/Makefile
> @@ -113,6 +113,8 @@ obj-$(CONFIG_PMIC_DA9052) += da9052-irq.o
> obj-$(CONFIG_PMIC_DA9052) += da9052-core.o
> obj-$(CONFIG_MFD_DA9052_SPI) += da9052-spi.o
> obj-$(CONFIG_MFD_DA9052_I2C) += da9052-i2c.o
> +
> +obj-$(CONFIG_MFD_AC100) += ac100.o
> obj-$(CONFIG_MFD_AXP20X) += axp20x.o
> obj-$(CONFIG_MFD_AXP20X_I2C) += axp20x-i2c.o
> obj-$(CONFIG_MFD_AXP20X_RSB) += axp20x-rsb.o
> diff --git a/drivers/mfd/ac100.c b/drivers/mfd/ac100.c
> new file mode 100644
> index 000000000000..9bc69cd7807d
> --- /dev/null
> +++ b/drivers/mfd/ac100.c
> @@ -0,0 +1,137 @@
> +/*
> + * MFD core driver for X-Powers' AC100 Audio Codec IC
> + *
> + * The AC100 is a highly integrated audio codec and RTC subsystem designed
> + * for mobile applications. It has 3 I2S/PCM interfaces, a 2 channel DAC,
> + * a 2 channel ADC with 5 inputs and a builtin mixer. The RTC subsystem has
> + * 3 clock outputs.
> + *
> + * The audio codec and RTC parts are completely separate, sharing only the
> + * host interface for access to its registers.
> + *
> + * Copyright (2016) Chen-Yu Tsai
> + *
> + * Author: Chen-Yu Tsai <w...@csie.org>
> + *
> + * This program is free software; you can redistribute it and/or modify
> + * it under the terms of the GNU General Public License version 2 as
> + * published by the Free Software Foundation.
> + */
> +
> +#include <linux/interrupt.h>
> +#include <linux/kernel.h>
> +#include <linux/mfd/core.h>
> +#include <linux/mfd/ac100.h>
> +#include <linux/module.h>
> +#include <linux/of.h>
> +#include <linux/regmap.h>
> +#include <linux/sunxi-rsb.h>
> +
> +static const struct regmap_range ac100_writeable_ranges[] = {
> + regmap_reg_range(AC100_CHIP_AUDIO_RST, AC100_I2S_SR_CTRL),
> + regmap_reg_range(AC100_I2S1_CLK_CTRL, AC100_I2S1_MXR_GAIN),
> + regmap_reg_range(AC100_I2S2_CLK_CTRL, AC100_I2S2_MXR_GAIN),
> + regmap_reg_range(AC100_I2S3_CLK_CTRL, AC100_I2S3_SIG_PATH_CTRL),
> + regmap_reg_range(AC100_ADC_DIG_CTRL, AC100_ADC_VOL_CTRL),
> + regmap_reg_range(AC100_HMIC_CTRL1, AC100_HMIC_STATUS),
> + regmap_reg_range(AC100_DAC_DIG_CTRL, AC100_DAC_MXR_GAIN),
> + regmap_reg_range(AC100_ADC_APC_CTRL, AC100_LINEOUT_CTRL),
> + regmap_reg_range(AC100_ADC_DAP_L_CTRL, AC100_ADC_DAP_OPT),
> + regmap_reg_range(AC100_DAC_DAP_CTRL, AC100_DAC_DAP_OPT),
> + regmap_reg_range(AC100_ADC_DAP_ENA, AC100_DAC_DAP_ENA),
> + regmap_reg_range(AC100_SRC1_CTRL1, AC100_SRC1_CTRL2),
> + regmap_reg_range(AC100_SRC2_CTRL1, AC100_SRC2_CTRL2),
> + regmap_reg_range(AC100_CLK32K_ANALOG_CTRL, AC100_CLKOUT_CTRL3),
> + regmap_reg_range(AC100_RTC_RST, AC100_RTC_UPD),
> + regmap_reg_range(AC100_ALM_INT_ENA, AC100_ALM_INT_STA),
> + regmap_reg_range(AC100_ALM_SEC, AC100_RTC_GP(15)),
> +};
> +
> +static const struct regmap_range ac100_volatile_ranges[] = {
> + regmap_reg_range(AC100_CHIP_AUDIO_RST, AC100_PLL_CTRL2),
> + regmap_reg_range(AC100_HMIC_STATUS, AC100_HMIC_STATUS),
> + regmap_reg_range(AC100_ADC_DAP_L_STA, AC100_ADC_DAP_L_STA),
> + regmap_reg_range(AC100_SRC1_CTRL1, AC100_SRC1_CTRL1),
> + regmap_reg_range(AC100_SRC1_CTRL3, AC100_SRC2_CTRL1),
> + regmap_reg_range(AC100_SRC2_CTRL3, AC100_SRC2_CTRL4),
> + regmap_reg_range(AC100_RTC_RST, AC100_RTC_RST),
> + regmap_reg_range(AC100_RTC_SEC, AC100_ALM_INT_STA),
> + regmap_reg_range(AC100_ALM_SEC, AC100_ALM_UPD),
> +};
> +
> +static const struct regmap_access_table ac100_writeable_table = {
> + .yes_ranges = ac100_writeable_ranges,
> + .n_yes_ranges = ARRAY_SIZE(ac100_writeable_ranges),
> +};
> +
> +static const struct regmap_access_table ac100_volatile_table = {
> + .yes_ranges = ac100_volatile_ranges,
> + .n_yes_ranges = ARRAY_SIZE(ac100_volatile_ranges),
> +};
> +
> +static const struct regmap_config ac100_regmap_config = {
> + .reg_bits = 8,
> + .val_bits = 16,
> + .wr_table = &ac100_writeable_table,
> + .volatile_table = &ac100_volatile_table,
> + .max_register = AC100_RTC_GP(15),
> + .cache_type = REGCACHE_RBTREE,
> +};
> +
> +static struct mfd_cell ac100_cells[] = {
> + {
> + .name = "ac100-codec",
> + .of_compatible = "x-powers,ac100-codec",
> + }, {
> + .name = "ac100-rtc",
> + .of_compatible = "x-powers,ac100-rtc",
> + },
> +};
> +
> +static int ac100_rsb_probe(struct sunxi_rsb_device *rdev)
> +{
> + struct ac100_dev *ac100;
> + int ret;
> +
> + ac100 = devm_kzalloc(&rdev->dev, sizeof(*ac100), GFP_KERNEL);
> + if (!ac100)
> + return -ENOMEM;
> +
> + ac100->dev = &rdev->dev;
> + sunxi_rsb_device_set_drvdata(rdev, ac100);
> +
> + ac100->regmap = devm_regmap_init_sunxi_rsb(rdev, &ac100_regmap_config);
> + if (IS_ERR(ac100->regmap)) {
> + ret = PTR_ERR(ac100->regmap);
> + dev_err(ac100->dev, "regmap init failed: %d\n", ret);
> + return ret;
> + }
> +
> + ret = devm_mfd_add_devices(ac100->dev, PLATFORM_DEVID_NONE, ac100_cells,
> + ARRAY_SIZE(ac100_cells), NULL, 0, NULL);
> + if (ret) {
> + dev_err(ac100->dev, "failed to add MFD devices: %d\n", ret);
> + return ret;
> + }
> +
> + return 0;
> +}
> +
> +static const struct of_device_id ac100_of_match[] = {
> + { .compatible = "x-powers,ac100" },
> + { },
> +};
> +MODULE_DEVICE_TABLE(of, ac100_of_match);
> +
> +static struct sunxi_rsb_driver ac100_rsb_driver = {
> + .driver = {
> + .name = "ac100",
> + .of_match_table = of_match_ptr(ac100_of_match),
> + },
> + .probe = ac100_rsb_probe,
> +};
> +module_sunxi_rsb_driver(ac100_rsb_driver);
> +
> +MODULE_DESCRIPTION("Audio codec MFD core driver for AC100");
> +MODULE_AUTHOR("Chen-Yu Tsai <w...@csie.org>");
> +MODULE_LICENSE("GPL v2");
> diff --git a/include/linux/mfd/ac100.h b/include/linux/mfd/ac100.h
> new file mode 100644
> index 000000000000..3c148f196b9f
> --- /dev/null
> +++ b/include/linux/mfd/ac100.h
> @@ -0,0 +1,178 @@
> +/*
> + * Functions and registers to access AC100 codec / RTC combo IC.
> + *
> + * Copyright (C) 2016 Chen-Yu Tsai
> + *
> + * Chen-Yu Tsai <w...@csie.org>
> + *
> + * This program is free software; you can redistribute it and/or modify
> + * it under the terms of the GNU General Public License version 2 as
> + * published by the Free Software Foundation.
> + */
> +
> +#ifndef __LINUX_MFD_AC100_H
> +#define __LINUX_MFD_AC100_H
> +
> +#include <linux/regmap.h>
> +
> +struct ac100_dev {
> + struct device *dev;
> + struct regmap *regmap;
> +};
> +
> +/* Audio codec related registers */
> +#define AC100_CHIP_AUDIO_RST 0x00
> +#define AC100_PLL_CTRL1 0x01
> +#define AC100_PLL_CTRL2 0x02
> +#define AC100_SYSCLK_CTRL 0x03
> +#define AC100_MOD_CLK_ENA 0x04
> +#define AC100_MOD_RST_CTRL 0x05
> +#define AC100_I2S_SR_CTRL 0x06
> +
> +/* I2S1 interface */
> +#define AC100_I2S1_CLK_CTRL 0x10
> +#define AC100_I2S1_SND_OUT_CTRL 0x11
> +#define AC100_I2S1_SND_IN_CTRL 0x12
> +#define AC100_I2S1_MXR_SRC 0x13
> +#define AC100_I2S1_VOL_CTRL1 0x14
> +#define AC100_I2S1_VOL_CTRL2 0x15
> +#define AC100_I2S1_VOL_CTRL3 0x16
> +#define AC100_I2S1_VOL_CTRL4 0x17
> +#define AC100_I2S1_MXR_GAIN 0x18
> +
> +/* I2S2 interface */
> +#define AC100_I2S2_CLK_CTRL 0x20
> +#define AC100_I2S2_SND_OUT_CTRL 0x21
> +#define AC100_I2S2_SND_IN_CTRL 0x22
> +#define AC100_I2S2_MXR_SRC 0x23
> +#define AC100_I2S2_VOL_CTRL1 0x24
> +#define AC100_I2S2_VOL_CTRL2 0x25
> +#define AC100_I2S2_VOL_CTRL3 0x26
> +#define AC100_I2S2_VOL_CTRL4 0x27
> +#define AC100_I2S2_MXR_GAIN 0x28
> +
> +/* I2S3 interface */
> +#define AC100_I2S3_CLK_CTRL 0x30
> +#define AC100_I2S3_SND_OUT_CTRL 0x31
> +#define AC100_I2S3_SND_IN_CTRL 0x32
> +#define AC100_I2S3_SIG_PATH_CTRL 0x33
> +
> +/* ADC digital controls */
> +#define AC100_ADC_DIG_CTRL 0x40
> +#define AC100_ADC_VOL_CTRL 0x41
> +
> +/* HMIC plug sensing / key detection */
> +#define AC100_HMIC_CTRL1 0x44
> +#define AC100_HMIC_CTRL2 0x45
> +#define AC100_HMIC_STATUS 0x46
> +
> +/* DAC digital controls */
> +#define AC100_DAC_DIG_CTRL 0x48
> +#define AC100_DAC_VOL_CTRL 0x49
> +#define AC100_DAC_MXR_SRC 0x4c
> +#define AC100_DAC_MXR_GAIN 0x4d
> +
> +/* Analog controls */
> +#define AC100_ADC_APC_CTRL 0x50
> +#define AC100_ADC_SRC 0x51
> +#define AC100_ADC_SRC_BST_CTRL 0x52
> +#define AC100_OUT_MXR_DAC_A_CTRL 0x53
> +#define AC100_OUT_MXR_SRC 0x54
> +#define AC100_OUT_MXR_SRC_BST 0x55
> +#define AC100_HPOUT_CTRL 0x56
> +#define AC100_ERPOUT_CTRL 0x57
> +#define AC100_SPKOUT_CTRL 0x58
> +#define AC100_LINEOUT_CTRL 0x59
> +
> +/* ADC digital audio processing (high pass filter & auto gain control */
> +#define AC100_ADC_DAP_L_STA 0x80
> +#define AC100_ADC_DAP_R_STA 0x81
> +#define AC100_ADC_DAP_L_CTRL 0x82
> +#define AC100_ADC_DAP_R_CTRL 0x83
> +#define AC100_ADC_DAP_L_T_L 0x84 /* Left Target Level */
> +#define AC100_ADC_DAP_R_T_L 0x85 /* Right Target Level */
> +#define AC100_ADC_DAP_L_H_A_C 0x86 /* Left High Avg. Coef */
> +#define AC100_ADC_DAP_L_L_A_C 0x87 /* Left Low Avg. Coef */
> +#define AC100_ADC_DAP_R_H_A_C 0x88 /* Right High Avg. Coef */
> +#define AC100_ADC_DAP_R_L_A_C 0x89 /* Right Low Avg. Coef */
> +#define AC100_ADC_DAP_L_D_T 0x8a /* Left Decay Time */
> +#define AC100_ADC_DAP_L_A_T 0x8b /* Left Attack Time */
> +#define AC100_ADC_DAP_R_D_T 0x8c /* Right Decay Time */
> +#define AC100_ADC_DAP_R_A_T 0x8d /* Right Attack Time */
> +#define AC100_ADC_DAP_N_TH 0x8e /* Noise Threshold */
> +#define AC100_ADC_DAP_L_H_N_A_C 0x8f /* Left High Noise Avg.
> Coef */
> +#define AC100_ADC_DAP_L_L_N_A_C 0x90 /* Left Low Noise Avg.
> Coef */
> +#define AC100_ADC_DAP_R_H_N_A_C 0x91 /* Right High Noise Avg.
> Coef */
> +#define AC100_ADC_DAP_R_L_N_A_C 0x92 /* Right Low Noise Avg.
> Coef */
> +#define AC100_ADC_DAP_H_HPF_C 0x93 /* High High-Pass-Filter
> Coef */
> +#define AC100_ADC_DAP_L_HPF_C 0x94 /* Low High-Pass-Filter
> Coef */
> +#define AC100_ADC_DAP_OPT 0x95 /* AGC Optimum */
> +
> +/* DAC digital audio processing (high pass filter & dynamic range control) */
> +#define AC100_DAC_DAP_CTRL 0xa0
> +#define AC100_DAC_DAP_H_HPF_C 0xa1 /* High High-Pass-Filter
> Coef */
> +#define AC100_DAC_DAP_L_HPF_C 0xa2 /* Low High-Pass-Filter
> Coef */
> +#define AC100_DAC_DAP_L_H_E_A_C 0xa3 /* Left High Energy Avg
> Coef */
> +#define AC100_DAC_DAP_L_L_E_A_C 0xa4 /* Left Low Energy Avg
> Coef */
> +#define AC100_DAC_DAP_R_H_E_A_C 0xa5 /* Right High Energy Avg
> Coef */
> +#define AC100_DAC_DAP_R_L_E_A_C 0xa6 /* Right Low Energy Avg
> Coef */
> +#define AC100_DAC_DAP_H_G_D_T_C 0xa7 /* High Gain Delay Time
> Coef */
> +#define AC100_DAC_DAP_L_G_D_T_C 0xa8 /* Low Gain Delay Time
> Coef */
> +#define AC100_DAC_DAP_H_G_A_T_C 0xa9 /* High Gain Attack Time
> Coef */
> +#define AC100_DAC_DAP_L_G_A_T_C 0xaa /* Low Gain Attack Time
> Coef */
> +#define AC100_DAC_DAP_H_E_TH 0xab /* High Energy Threshold */
> +#define AC100_DAC_DAP_L_E_TH 0xac /* Low Energy Threshold */
> +#define AC100_DAC_DAP_H_G_K 0xad /* High Gain K parameter */
> +#define AC100_DAC_DAP_L_G_K 0xae /* Low Gain K parameter */
> +#define AC100_DAC_DAP_H_G_OFF 0xaf /* High Gain offset */
> +#define AC100_DAC_DAP_L_G_OFF 0xb0 /* Low Gain offset */
> +#define AC100_DAC_DAP_OPT 0xb1 /* DRC optimum */
> +
> +/* Digital audio processing enable */
> +#define AC100_ADC_DAP_ENA 0xb4
> +#define AC100_DAC_DAP_ENA 0xb5
> +
> +/* SRC control */
> +#define AC100_SRC1_CTRL1 0xb8
> +#define AC100_SRC1_CTRL2 0xb9
> +#define AC100_SRC1_CTRL3 0xba
> +#define AC100_SRC1_CTRL4 0xbb
> +#define AC100_SRC2_CTRL1 0xbc
> +#define AC100_SRC2_CTRL2 0xbd
> +#define AC100_SRC2_CTRL3 0xbe
> +#define AC100_SRC2_CTRL4 0xbf
> +
> +/* RTC clk control */
> +#define AC100_CLK32K_ANALOG_CTRL 0xc0
> +#define AC100_CLKOUT_CTRL1 0xc1
> +#define AC100_CLKOUT_CTRL2 0xc2
> +#define AC100_CLKOUT_CTRL3 0xc3
> +
> +/* RTC module */
> +#define AC100_RTC_RST 0xc6
> +#define AC100_RTC_CTRL 0xc7
> +#define AC100_RTC_SEC 0xc8 /* second */
> +#define AC100_RTC_MIN 0xc9 /* minute */
> +#define AC100_RTC_HOU 0xca /* hour */
> +#define AC100_RTC_WEE 0xcb /* weekday */
> +#define AC100_RTC_DAY 0xcc /* day */
> +#define AC100_RTC_MON 0xcd /* month */
> +#define AC100_RTC_YEA 0xce /* year */
> +#define AC100_RTC_UPD 0xcf /* update trigger */
> +
> +/* RTC alarm */
> +#define AC100_ALM_INT_ENA 0xd0
> +#define AC100_ALM_INT_STA 0xd1
> +#define AC100_ALM_SEC 0xd8
> +#define AC100_ALM_MIN 0xd9
> +#define AC100_ALM_HOU 0xda
> +#define AC100_ALM_WEE 0xdb
> +#define AC100_ALM_DAY 0xdc
> +#define AC100_ALM_MON 0xdd
> +#define AC100_ALM_YEA 0xde
> +#define AC100_ALM_UPD 0xdf
> +
> +/* RTC general purpose register 0 ~ 15 */
> +#define AC100_RTC_GP(x) (0xe0 + (x))
> +
> +#endif /* __LINUX_MFD_AC100_H */
--
Lee Jones
Linaro STMicroelectronics Landing Team Lead
Linaro.org │ Open source software for ARM SoCs
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